Hi, I have a encoder and stepper motor set up to control the rotation of the stepper motor. But it only jitters and doesn't move in any directions. Any idea?
Im using Nema 17
Im using 12V 2A power supply
Im using Sparkfun Big easy driver!
https://learn.sparkfun.com/tutorials/big-easy-driver-hookup-guide/all#introduction
HI
Please read the forum guidelines to see how to properly ask a question and some good information on making a good post.
You will get faster and better help if you post more detail about your project, including the exact type of motor driver, insert a connection diagram, and show your code using code tags.
Likely wiring or software, but as you have not provided clear details of either it is hard to tell.
While long shot pictures of the kit give a general overview, it's basically a mess-o-wires and not very useful to identify missed connections.
Three of many possible mistakes are that you forgot to set the motor driver current limit correctly, the driver cannot handle the required current, or the power supply cannot provide the required current.
Post a link to the stepper motor product page, or the exact model number.
The driver looks like an L293 and might the wrong kind. The stepper datasheet will tell necessary data.
That's the size of the mounting plate, 1.7 inch.
From that we can't tell if this motor is suitable for driver and supply voltage.
Did you already try to swap one of the motor coils (! remove power before doing that).
@Railroder. OP said "Big easy driver"
Leo..
I dont have it unfortunately... Is there a way to check using a meter?
The picture tells a different story in my eyes.
You don't have what?
Yes, you can check motor coil resistance with a DMM.
Motor coils should only be a few ohms if you want to use that supply and driver.
A 30 ohm stepper motor is no good.
Report back.
Leo..
You can measure the stepper coil resistance. That might give us an indication.
The link in the first post shows the sparkfun big easy driver, and that is definitely what is shown in the picture.
What is missing are the specs of the motor and and a schematic how everything is wired.
Even though it says "BigEasyDriver" on the PCB?
Isn't that just another board version of the A4988 (1Amp without heatsink).
Leo..
That sounds like a selling name, not a technical description. Look a the circuitry!
Of course, but you can compare the picture in the link with the picture of the OP to confirm it is the same board. Only because it is red and has blue screw terminals it doesn't have to be a L298 board. The L298 chip is much bigger than the chip on this board. As @Wawa already suggested its simply another A4988 board.
Hi, I got an encoder that need to be connected to my arduino to control a NEMA 17 Stepper motor. Could you tell me what power supply I need? Also some additional components like capacitor? Thanks.
BTW, I have ordered two different Nema17 just in case. I'm a bit in rush so I have both.
Driver : DRV8825
Stepstick DRV8825 stappenmotordriver 123-3D 123-3d.nl
https://www.123-3d.nl/pdf/DSD00002.pdf
Motor:
1. NEMA17 stepper motor | 1.8 degrees per step | 48mm long | 4.8kg/cm
Brand: 123-3D Resistance: 1,2
Dimensions: 42.3 x 42.3 x 48 mm (LxWxH) Shaft diameter: 5mm
Voltage: 3 Q Nominal current: 2.5A
Holding torque: 4.8 kg-cm Shaft length: 22mm
Number of wires: 4 Our Item No: DMO00052
2.NEMA17 stappenmotor | 1,8 graden per stap | 40 mm lang | 4,08 kg/cm
Brand: 123-3D Stap hoek: 1,8 °
Dimensions: 42,3 x 42,3 x 40 mm (LxBxH) Nominale stroom: 1,2 A
Voltage: 2,55 V Stappenmotor formaat: Nema 17 info
Holding torque: 4.08 kg-cm As lengte: 22 mm
Number of wires: 4 Ons Artikelnr: DMO00051
As diameter: 5 mm
I have this feeling there is more than a stepper motor and a sensor. You need to determine the worse case current requirements of every item in your project. Be sure to calculate the motors locked rotor (stall) current. Multiply this by 1.2 and you will have the basic current required for your project. Get the power supply for the highest voltage then use inexpensive buck converters for the lower voltages.
The DRV8825 is not suitable for use with stepper #1. Buy a stepper driver that can easily handle the rated winding current.
how do I determine one?
Stepper motor #1 has max rated current of 2,5A, and the driver can support maximum current of 2,5A, so wont that work?
